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Part Number: M67025E
Description: The M67025E is a very low power CMOS dual port static RAM organised as 8192 * 16. The M67025E is designed to be used as...
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M67025E
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General Description
M67025E General Description
The M67025E is a very low power CMOS dual port static RAM organised as 8192 * 16. The M67025E is designed to be used as a stand-alone 16 bit dual port RAM or as a combination MASTER/SLAVE dual port for 32 bit or more width systems. The TEMIC MASTER/SLAVE dual port approach in memory system applications results in full speed, error free operation without the need of an additional discrete logic.
Master and slave devices provide two independant ports with separate control, address and I/O pins that permit independant, asynchronous access for reads and writes to any location in the memory. An automatic power down feature controlled by CS permits the on-chip circuitry of each port in order to enter a very low stand by power mode.
Using an array of eight transistors (8T) memory cell, the M67025E combines an extremely low standby supply current (typ = 1.0 A) with a fast access time at 30 ns over the full temperature range. All versions offer battery backup data retention capability with a typical power consumption at less than 5 W.
The M67025E is processed according to the methods of the latest revision of the MIL STD 883 (class B or S), ESA SCC 9000 or QML.
M67025E Maximum Ratings
Supply voltage (VCC-GND) : . . . . . . . . . . . . . . . . . . . -0.3 V to 7.0 V
Input or output voltage applied : . . . . . . . . . . . . . . . (GND 0.3 V) to (Vcc + 0.3 V)
Storage temperature : . . . . . . . . . . . . . . . . . . . . . . 65 to +150
* Notice
Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device.This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extented periods may affect reliability.
Input or output voltage applied : . . . . . . . . . . . . . . . (GND 0.3 V) to (Vcc + 0.3 V)
Storage temperature : . . . . . . . . . . . . . . . . . . . . . . 65 to +150
* Notice
Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device.This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extented periods may affect reliability.
| OPERATING RANGE | OPERATING SUPPLY VOLTAGE | OPERATING TEMPERATURE |
| Military | Vcc = 5 V ± 10 % | 55 to + 125 |
M67025E Features
Fast access time : 30, 45 ns
Wide temperature range : 55 °C to +125 °C
Separate upper byte and lower byte control for multiplexed bus compatibility
Expandable data bus to 32 bits or more using master/slave chip select when using more than one device
On chip arbitration logic
Versatile pin select for master or slave :
M/S = H for busy output flag on master
M/S = L for busy input flag on slave
INT flag for port to port communication
Full hardware support of semaphore signaling between ports
Fully asynchronous operation from either port
Battery back-up operation : 2 V data retention
TTL compatible
Single 5 V ± 10 % power supply
Wide temperature range : 55 °C to +125 °C
Separate upper byte and lower byte control for multiplexed bus compatibility
Expandable data bus to 32 bits or more using master/slave chip select when using more than one device
On chip arbitration logic
Versatile pin select for master or slave :
M/S = H for busy output flag on master
M/S = L for busy input flag on slave
INT flag for port to port communication
Full hardware support of semaphore signaling between ports
Fully asynchronous operation from either port
Battery back-up operation : 2 V data retention
TTL compatible
Single 5 V ± 10 % power supply
M67025E Connection Diagram
M67025E
PDF/DataSheet Download
- Datasheet: M67025E
- File Size: 164724 KB
- Manufacturer: Atmel
- Click here to Download
- ·M670
- ICST [Integrated Circuit Systems]
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- ICST [Integrated Circuit Systems]
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- ·M670-156.2500
- ICST [Integrated Circuit Systems]
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- ·M670-161.1328
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- ICST [Integrated Circuit Systems]
- VOLTAGE CONTROLLED SAW OSCILLATOR
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- ·M670-167.2820
- ICST [Integrated Circuit Systems]
- VOLTAGE CONTROLLED SAW OSCILLATOR
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- ICST [Integrated Circuit Systems]
- VOLTAGE CONTROLLED SAW OSCILLATOR
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